A person born outside the borders of the United States, say London, England was eligible to be President if they were a citizen upon the ratification of the Constitution. Three who come to mind are Charles Lee, Horatio Gates and Alexander Hamilton. Hamilton had ambitions. His opponents had many arguments against him, but not his place of birth. Or his parents citizenship. His parents’ characters yes, but not citizenship status.
Do you really not understand that the reason the words,
"No Person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution, shall be eligible to the Office of President; neither shall any Person be eligible to that Office who shall not have attained to the Age of thirty five Years, and been fourteen Years a Resident within the United States."
...........were included to allow these folks the opportunity to aspire the office?